15896197643 has 2 divisors, whose sum is σ = 15896197644. Its totient is φ = 15896197642.

The previous prime is 15896197609. The next prime is 15896197649. The reversal of 15896197643 is 34679169851.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15896197643 - 2⁶ = 15896197579 is a prime.

It is not a weakly prime, because it can be changed into another prime (15896197649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7948098821 + 7948098822.

It is an arithmetic number, because the mean of its divisors is an integer number (7948098822).

Almost surely, 2^15896197643 is an apocalyptic number.

15896197643 is a deficient number, since it is larger than the sum of its proper divisors (1).

15896197643 is an equidigital number, since it uses as much as digits as its factorization.

15896197643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9797760, while the sum is 59.

The spelling of 15896197643 in words is "fifteen billion, eight hundred ninety-six million, one hundred ninety-seven thousand, six hundred forty-three".